Portable telephone



FIG. 1 is a top, front and right side perspective view of a portable telephone according to my design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a top, front and right side perspective view of the portable telephone in a closed position; and,

FIG. 9 is a top, rear and left side perspective view thereof in a closed position. 

The ornamental design for a portable telephone, as shown and described. 